Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2002.607.608DasBiplob Sharif Ahmed KhanYusuf Abdul Karim SarkerMohammad 5200255A study was conducted for the determination of some trace
metal (Cr, Mn, Zn, Ni, Cu, Pb, Cd and Fe) concentrations in water of the Karnaphuli
River estuary analyzing seasonally viz., pre-monsoon, monsoon and post-monsoon
by employing air acetylene flame in combination with single element hollow cathode
lamps and atomic absorption spectrophotometer. Sub-surface water samples were
collected from 4 stations namely Mouth, Naval base, Sadarghat and Kalurghat
regions of the Karnaphuli River estuary. The concentrations (
g-1 dry weight) of Cr, Mn, Zn, Ni, Cu, Pb, Cd and Fe were found to
range from 0.421 to 0.925, 0.498 to 1.372, 0.472 to 1.186, 0.356 to 0.865, 0.372
to 0.973, 0.405 to 1.195, 0.090 to 0.217 and 20.025 to 42.203 respectively.
The concentrations of Pb, Cu, Fe, Ni and Cr were observed higher and concentrations
of Mn and Cd were found lower than that of the recommended values. It is assumed
from the analytical findings that the estuary has been polluted from domestic
sewage, land washout, river run-off and shipping activities.]]>Abdullah, M. I. and L.G. Royle,197454581597Morley, N.H., P.I. Statham and J.D. Burton,19934010431062Ouseph, P.P.,199224188192Satyanarayana, D.I.M., Rao and Reddy,198514139146Shen, Z., D. Wenjiang, Z. Licheng and C. Xibao,1989176239251Zingede, M.D., S.Y.S. Singbal, C.F. Moraes and C.V.G. Redoly,1976512217DOE.,19901990ESCAP.,19871987Ouseph, P.P.,199224186192